Mounting for rubber erasers



July 20,1926. 1,593,120

B. B. GOLDSMITH MOUNTING FOR RUBBER ERASERS Filed Nov. 13, 1924 Patented July 20, 1926.

UNITED STATES PATENT OFFICE.

BYRON IB- GOLDSMITH, OB NEW YORK, N. Y.

MOUNTING FOB RUBBER ERASERS.

Application filed November 13, 1924. Serial li'o. 8,793.

The present invention relates to an improved monntin for rubber erasers whether used as independent articles or secured to the end of a pencil or pencil point protector, as

bis common in this art. My improved device comprises, a socket in combinatlon with a clamp directly applied to the eraser itself and adapted to fit into said socket.

Clamps have been used hitherto for this pur ose, but there has always been some difficu ty in pushing the clamp in a satisfactor manner into the socket, due to the slightdifferences in the thicknesses of different erasers. Moreover, where flat erasers have been used, it has been necessary to use fiat sockets.

One advantage of my present invention is that the construction of clamp and socket is such as to make it easy to unite them, despite the variations in thickness of the erasers met with in practical manufacture. Another advantage is that my mounting does not employ a fiat socket, and is therefore adapted to tasteful and presentable use on the end of a pencil polnt protector. The invention is illustrated in a preferred form in the accompanying drawing wherein Figure 1 is a front elevation of my. mounta larger scale in the edge view with the clamp and socket separated, Figure 3 is a side view of the clamp alone, shown in open position, and Figure 4 is a front elevation of my mounting on a pencil point protector.

My improved clamp comprises preferably a piece of sheet metal struck up to form two similar upstanding rounded sides 10 each having serrated edges facing the similar edges of the other, and a stri' 11 uniting T is clam is. squeezed together against the middle 0 the these sides at the bottom.

sides of a flat eraser 12, as shown clearly ing on a pencil, Figure 2 shows the same on in Figure 2. v The opposite edges of the eraser extend beyond the clamp.

The socket is also preferably formed from sheet metal, and comprises oppositel facing rounded parts 13 which fit the roun ed sides 10 of the clamp; thesesides being joined by extensions 14 on each side of substantially rectangular form, to receive those parts of the eraser that extend on each side beyond the clamp sides 10. p

Where the mountin is used on a pencil 15, it comprises 'furt eran extension 16' adapted to be fitted onto the pencil.

If desired this whole socket may be an in tegral part of a well known sheet metal point 1 protector 17 as shown in Figure 4...

As clearly shown in Figure 2 the sides of co.

the clamp 10, when applied to t e eraser are slightly tapered, being narrower at the-bottom than'at the top, and the flat sided extensions on the socket lend a certain amount of resilience to the same. Hence, whatever are the small variations in thickness between different erasers 12,'the combined eraser'and clamp can always be easily forced into place in the socket. It will, of course, be understood that the flat sided extensions 14 should "always be made wide enough to accommodate the thickest erasers to be expected.

BYRON-B. GOLDSMITH. I 

